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Diffstat (limited to 'tdeioslave/imap4/mimehdrline.cc')
| -rw-r--r-- | tdeioslave/imap4/mimehdrline.cc | 521 |
1 files changed, 521 insertions, 0 deletions
diff --git a/tdeioslave/imap4/mimehdrline.cc b/tdeioslave/imap4/mimehdrline.cc new file mode 100644 index 000000000..9646ed26f --- /dev/null +++ b/tdeioslave/imap4/mimehdrline.cc @@ -0,0 +1,521 @@ +/*************************************************************************** + mimehdrline.cc - description + ------------------- + begin : Wed Oct 11 2000 + copyright : (C) 2000 by Sven Carstens + email : s.carstens@gmx.de + ***************************************************************************/ + +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + ***************************************************************************/ + +#include <config.h> +#include <iostream> +#include <ctype.h> +#include <stdlib.h> +#include <stdio.h> + +#include "mimehdrline.h" +#include "rfcdecoder.h" + +using namespace std; + +const char *wdays[] = { + "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" +}; + +const char *months[] = { + "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" +}; + +mimeHdrLine::mimeHdrLine (): +mimeValue ((const char *) NULL), mimeLabel ((const char *) NULL) +{ +} + +mimeHdrLine::mimeHdrLine (const TQCString & aLabel, const TQCString & aValue): +mimeValue (aValue), +mimeLabel (aLabel) +{ +} + +mimeHdrLine::mimeHdrLine (mimeHdrLine * aHdrLine): +mimeValue (aHdrLine->mimeValue), mimeLabel (aHdrLine->mimeLabel) +{ +} + +mimeHdrLine::~mimeHdrLine () +{ +} + +int +mimeHdrLine::appendStr (const char *inCStr) +{ + int retVal = 0; + int skip; + char *aCStr = (char *) inCStr; + + if (aCStr) + { + skip = skipWS (aCStr); + if (skip && !mimeLabel.isEmpty ()) + { + if (skip > 0) + { + mimeValue += TQCString (aCStr, skip + 1); + aCStr += skip; + retVal += skip; + skip = parseFullLine (aCStr); + mimeValue += TQCString (aCStr, skip + 1); + retVal += skip; + aCStr += skip; + } + } + else + { + if (mimeLabel.isEmpty ()) + return setStr (aCStr); + } + } + return retVal; +} + +/** parse a Line into the class +move input ptr accordingly +and report characters slurped */ +int +mimeHdrLine::setStr (const char *inCStr) +{ + int retVal = 0; + char *aCStr = (char *) inCStr; +// char *begin = aCStr; + mimeLabel = TQCString ((const char *) NULL); + mimeValue = TQCString ((const char *) NULL); + + if (aCStr) + { + // can't have spaces on normal lines + if (!skipWS (aCStr)) + { + int label = 0, advance; + while ((advance = parseWord (&aCStr[label]))) + { + label += advance; + } + if (label && aCStr[label - 1] != ':') + retVal = 0; + else + { + mimeLabel = TQCString (aCStr, label); //length including zero + retVal += label; + aCStr += label; + } + } + if (retVal) + { + int skip; + skip = skipWS (aCStr); + if (skip < 0) + skip *= -1; + aCStr += skip; + retVal += skip; + skip = parseFullLine (aCStr); + mimeValue = TQCString (aCStr, skip + 1); + retVal += skip; + aCStr += skip; + } + else + { + //Skip malformed line + while (*aCStr && *aCStr != '\r' && *aCStr != '\n') + { + retVal--; + aCStr++; + } + if (*aCStr == '\r') + { + retVal--; + aCStr++; + } + if (*aCStr == '\n') + { + retVal--; + aCStr++; + } + } + } + else + { + //debug + } + return retVal; +} + +/** slurp one word*/ +int +mimeHdrLine::parseWord (const char *inCStr) +{ + int retVal = 0; + char *aCStr = (char *) inCStr; + + if (aCStr && *aCStr) + { + if (*aCStr == '"') + return mimeHdrLine::parseQuoted ('"', '"', aCStr); + else + return mimeHdrLine::parseHalfWord (aCStr); + } + else + { + //debug(); + } + return retVal; +} + +/** slurp one word*/ +int +mimeHdrLine::parseQuoted (char startQuote, char endQuote, const char *inCStr) +{ + char *aCStr = (char *) inCStr; + int retVal = 0; + + if (aCStr && *aCStr) + { + if (*aCStr == startQuote) + { + aCStr++; + retVal++; + } + else + return 0; + while (*aCStr && *aCStr != endQuote) + { + //skip over backticks + if (*aCStr == '\\') + { + aCStr++; + retVal++; + } + //eat this + aCStr++; + retVal++; + } + if (*aCStr == endQuote) + { + aCStr++; + retVal++; + } + } + else + { + //debug(); + } + return retVal; +} + +/** slurp one alphanumerical word without continuation*/ +int +mimeHdrLine::parseAlphaNum (const char *inCStr) +{ + int retVal = 0; + char *aCStr = (char *) inCStr; + + if (aCStr) + { + while (*aCStr && isalnum (*aCStr)) + { + //skip over backticks + if (*aCStr == '\\') + { + aCStr++; + retVal++; + } + //eat this + aCStr++; + retVal++; + } + } + else + { + //debug(); + } + return retVal; +} + +int +mimeHdrLine::parseHalfWord (const char *inCStr) +{ + int retVal = 0; + char *aCStr = (char *) inCStr; + + if (aCStr && *aCStr) + { + if (isalnum (*aCStr)) + return mimeHdrLine::parseAlphaNum (aCStr); + //skip over backticks + if (*aCStr == '\\') + { + aCStr++; + retVal++; + } + else if (!isspace (*aCStr)) + { + //eat this + aCStr++; + retVal++; + } + } + else + { + //debug(); + } + return retVal; +} + +/** slurp one line without continuation*/ +int +mimeHdrLine::parseHalfLine (const char *inCStr) +{ + int retVal = 0; + char *aCStr = (char *) inCStr; + + if (aCStr) + { + while (*aCStr && *aCStr != '\n') + { + //skip over backticks + if (*aCStr == '\\') + { + aCStr++; + retVal++; + } + //eat this + aCStr++; + retVal++; + } + if (*aCStr == '\n') + { + aCStr++; + retVal++; + } + } + else + { + //debug(); + } + return retVal; +} + +/** skip all white space characters including continuation*/ +int +mimeHdrLine::skipWS (const char *inCStr) +{ + int retVal = 0; + char *aCStr = (char *) inCStr; + + if (aCStr && *aCStr) + { + while (*aCStr == ' ' || *aCStr == '\t') + { + aCStr++; + retVal++; + } + //check out for continuation lines + if (*aCStr == '\r') + { + aCStr++; + retVal++; + } + if (*aCStr++ == '\n') + if (*aCStr == '\t' || *aCStr == ' ') + { + int skip = mimeHdrLine::skipWS (aCStr); + if (skip < 0) + skip *= -1; + retVal += 1 + skip; + } + else + { + retVal = -retVal - 1; + } + } + else + { + //debug(); + } + return retVal; +} + +/** parses continuated lines */ +int +mimeHdrLine::parseFullLine (const char *inCStr) +{ + int retVal = 0; + char *aCStr = (char *) inCStr; + int skip; + + if (aCStr) + { + //skip leading white space + skip = skipWS (aCStr); + if (skip > 0) + { + aCStr += skip; + retVal += skip; + } + while (*aCStr) + { + int advance; + + if ((advance = parseHalfLine (aCStr))) + { + retVal += advance; + aCStr += advance; + } + else if ((advance = skipWS (aCStr))) + { + if (advance > 0) + { + retVal += advance; + aCStr += advance; + } + else + { + retVal -= advance; + break; + } + } + else + break; + } + } + else + { + //debug(); + } + return retVal; +} + +/** parses continuated lines */ +int +mimeHdrLine::parseSeparator (char separator, const char *inCStr) +{ + char *aCStr = (char *) inCStr; + int retVal = 0; + int skip; + + if (aCStr) + { + //skip leading white space + skip = skipWS (aCStr); + if (skip > 0) + { + aCStr += skip; + retVal += skip; + } + while (*aCStr) + { + int advance; + + if (*aCStr != separator) + { + if ((advance = mimeHdrLine::parseWord (aCStr))) + { + retVal += advance; + aCStr += advance; + } + else if ((advance = mimeHdrLine::skipWS (aCStr))) + { + if (advance > 0) + { + retVal += advance; + aCStr += advance; + } + else + { + retVal -= advance; + break; + } + } + else + break; + } + else + { + //include separator in result + retVal++; + aCStr++; + break; + } + } + } + else + { + //debug(); + } + return retVal; +} + +/** return the label */ + +const TQCString& +mimeHdrLine::getLabel () +{ + return mimeLabel; +} + +/** return the value */ +const TQCString& +mimeHdrLine::getValue () +{ + return mimeValue; +} + + +// FIXME: very inefficient still +TQCString +mimeHdrLine::truncateLine(TQCString aLine, unsigned int truncate) +{ + int cutHere; + TQCString retVal; + uint len = aLine.length(); + + // see if we have a line of the form "key: value" (like "Subject: bla") + // then we do not want to truncate between key and value + int validStart = aLine.find(": "); + if (validStart > -1) { + validStart += 2; + } + while (len > truncate) { + cutHere = aLine.findRev(' ', truncate); + if (cutHere < 1 || cutHere < validStart) { + cutHere = aLine.findRev('\t', truncate); + if (cutHere < 1) { + cutHere = aLine.find(' ', 1); + if (cutHere < 1) { + cutHere = aLine.find('\t', 1); + if (cutHere < 1) { + // simply truncate + return aLine.left(truncate); + } + } + } + } + + retVal += aLine.left(cutHere) + '\n'; + int chop = len - cutHere; + aLine = aLine.right(chop); + len -= chop; + } + retVal += aLine; + + return retVal; +} + |